Industrial Ethernet, Part 2: Case Studies Exam

One (1) RCEP / ACEC Certified Professional Development Hour (PDH) will be provided upon successful completion of an exam following the webcast.

Air Date: Thursday, November 21, 2013

You must get 8 of 10 questions correct to pass the exam. You may retake the exam if necessary. You will be notified whether you passed or failed automatically after taking the exam. Upon passing the exam, you will be able to download the completion certificate immediately.

Industrial Ethernet, Part 2: Case Studies

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Exam Question 1 *

Regarding Ethernet cable installations:

CAT6 non-shielded network cabling can run reliably in a motor control center next to a 480 V ac variable frequency drive and 120 V ac motor starter wiring.
Cable-pulling tools and techniques for larger conductor cabling can be used safely for CAT6 Ethernet cables.
Are generally fine with kinks in CAT6 cable, stretched internal conductors, conductor pair twisting, and cable compression.
A and B.
None of the above.

Exam Question 2 *

In the presenter’s experience:

It’s always OK to have in-house personnel run Ethernet cabling as long as they’ve read applicable standards first.
It’s important to be knowledgeable installation techniques, use certified installers, follow industry standards, and perform cable verification after installation.
Inconsistently crimped connectors are OK, because industrial Ethernet is rugged.
A and C.
All of the above.

Exam Question 3 *

In the presenter’s experience:

Electromagnetic interference (EMI) isn’t a problem using unshielded CAT6 Ethernet cables because industrial Ethernet is rugged.
Electromagnetic interference (EMI) can result in potential interference with Ethernet cabling.
Improperly terminated RJ-45 connections can be a major communications issue.
Using an Ethernet cable tester prior to start up is a waste of time.
B and C.

Exam Question 4 *

In the presenter’s experience:

Spending the appropriate time and effort designing an Ethernet infrastructure is sometimes overlooked.
Spending the correct amount of time designing and specifying an Ethernet infrastructure can eliminate common problems.
Proper design can ensure that an Ethernet network can handle future growth.
All of the above.
None of the above.

Exam Question 5 *

Choose the correct statement, according to the presenter.

Unmanaged switches typically do not have any web-based interfaces to adjust port settings.
Advanced Ethernet switching technologies, such as Spanning Tree Protocol or IGMP Snooping, are available in unmanaged switches, managed switches, gateways, and inside some control devices. (IGMP stands for Internet group management protocol.)
Better to go with lower-cost unmanaged switches because industrial Ethernet is rugged.
None of the above.

Exam Question 6 *

Choose the correct statement, according to the presenter.

Spanning Tree Protocol (STP) provides path redundancy in the network and prevents loops that are created by multiple active paths between switches.
Managed switches have SNMP (Simple Network Management Protocol) built-in to remotely monitor switches on the network.
Quality of Service (QoS) prioritizes critical traffic (such as video) within managed switches.
Managed switches have the ability to create VLANs or Virtual Networks. VLANs (virtual local area networks) allow a switch to logically group devices together to isolate traffic between these groups even when the traffic is passing over the same physical switch.
All of the above.

Exam Question 7 *

When does an Ethernet network need Layer 3 switches?

Layer 2 networks will never forward all traffic, especially ARP (address resolution protocol) and DHCP (dynamic host configuration protocol) broadcasts.
Layer 3 switching can contain broadcast traffic to the local network.
Layer 3 switches will never allow for routing between subnets.
None of the above.

Exam Question 8 *

In the third case study presented, which was NOT among lessons learned while dealing with an existing network infrastructure:

Make sure you spend time reviewing the physical installation and hardware.
Check existing cabling and connections.
Ignore PLC to PLC communications because the self-healing ring industrial Ethernet design used can handle it automatically.
Ensure the existing hardware is configured correctly.
Test the network before connecting your new system into it.

Exam Question 9 *

According to an Ethernet report from IHS, how long will it take for Ethernet to be the dominant networking technology in industrial environments?

10-15 years
It is now
5-10 years
2-5 years
None of the above

Exam Question 10 *

Use of industrial Ethernet (IE) switches, driven by discrete automation, will get a boost from increased use in process and infrastructure applications, according to ARC Advisory Group information cited.

IE differs from commercial switches: ruggedized enclosures, high IP ratings, mounting and connector types, ability to withstand extended temperature ranges, redundant components, and conformance to industrial infrastructure standards, among others.
Infrastructure applications include smart grid and intelligent rail.
Mix of form factors, point counts, port speeds, media types, and other device characteristics continues to expand.
Availability of switches that meet requirements such as IEC 61850-3 for substation automation and EN 50155 for rail further enhances Ethernet’s suitability in infrastructure applications.
All of the above.